Grammy and Grampy Silver of New York City are visiting the beautiful city of Prague in the Czech Republic, where their only granddaughter Gabby, age eight, lives. Her father, their son, lives in Prague. Gabby decides that the three of them should spend the day at the famous Prague Zoo because she, Gabby, has a day off from school and the zoo is her favorite place. Her grandparents are happy, even proud, to do so, because they will have their own private, Czech-speaking guide escorting them about. They know not a word of Czech and so they are only too happy to let Gabby take the lead. Of course she has her own idea about things, but that's all right with them, except that they learn something along the way. Perhaps eight year olds are not quite always as practical as, say, grown-ups. For example, a formal arrangement regarding time, usually known as an appointment, might not mean the same to Gabby as to Grammy and Grampy Silver. This all leads to some interesting and undesirably dramatic moments well beyond what the Silvers originally had in mind when they agreed to follow Gabby wherever she wished to lead them. A Crazy Day At the Zoo offers its reader a delightful journey of two loving grandparents and their granddaughter into some moments that might even have challenged the heroine of Alice in Wonderland.